Weld a door to 100%

Kill your first Fleshpound

Kill a Siren before she screams

Stop a critical bleed-out with a bandage, first aid bandage or first aid kit

Shoot a flying stick of dynamite and the one who threw it on a single Concentration.

Fight in Concentration for 15 minutes.

Wear a full suit of Iron Armour.

Finish the game in Hard Mode

Finish the game in Easy Mode

Kill 50 enemies with the SAS - 12

Kill 30 enemies with the M79

Kill 30 enemies with the MP40

Find 40 treasures